Grades are a hygiene check, not a security guarantee.

MCP, MCP server

tx402

Plain-English explanations of Algorand transactions, sold as a pay-per-call API with x402 on Algorand.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit 69325929c419, unchanged since the check below.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    submission/generate-demo-video.py, line 427 subprocess.run([str(FFMPEG), "-hide_banner", "-loglevel", "error", *args], check=True)

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    CLAUDE.md, line 150 node -e "const res=await fetch('https://tx402-production.up.railway.app

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    src/payments.js, line 54 'Fix .env before starting the server.'

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    submission/generate-demo-video.py, line 427

    subprocess.run([str(FFMPEG), "-hide_banner", "-loglevel", "error", *args], check=True)

    submission/generate-demo-video.py, line 431

    probe = subprocess.run(

    submission/generate-demo-video.py, line 496

    shutil.rmtree(FRAMES, ignore_errors=True)

    Show more

    submission/generate-demo-video.py, line 497

    shutil.rmtree(AUDIO, ignore_errors=True)

    submission/generate-demo-video.py, line 513

    probe = subprocess.run(

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    CLAUDE.md, line 150

    node -e "const res=await fetch('https://tx402-production.up.railway.app

    examples/catalog-client.mjs, line 22

    const response = await fetch(url, { ...init, headers: { accept: 'application/json', ...init.headers } });

    examples/node-client.mjs, line 72

    const discoveryRes = await fetch(`${SERVER}/discovery`);

    Show more

    public/demo.js, line 10

    const response = await fetch(`/demo?example=${encodeURIComponent(example.value)}`, {

    scripts/check-phase4-mainnet.mjs, line 38

    const res = await fetch(url, { headers: { accept: 'application/json' } });

    scripts/check-phase4-mainnet.mjs, line 71

    accountRes = await fetch(`${MAINNET_INDEXER_URL}/v2/accounts/${encodeURIComponent(PAY_TO)}`, {

    scripts/check-phase5-buyer.mjs, line 74

    accountRes = await fetch(`${MAINNET_INDEXER_URL}/v2/accounts/${encodeURIComponent(buyerAddress)}`, {

    scripts/smoke-phase3.mjs, line 26

    const res = await fetch(url);

    scripts/smoke-phase3.mjs, line 40

    const res = await fetch(`${SERVER}${pathname}`, {

    Dockerfile, line 21

    CMD node -e "fetch('http://localhost:4021/health').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    scripts/check-phase4-mainnet.mjs, line 14

    * If MAINNET_PAY_TO is not set, the script falls back to PAY_TO from .env.

    src/payments.js, line 54

    'Fix .env before starting the server.'

    src/payments.js, line 60

    // network's canonical USDC id is almost certainly a stale .env left over

    Show more

    src/payments.js, line 67

    `USDC asset id, but NETWORK is set to ${RESOLVED_NETWORK}. This looks like a stale .env - ` +

    src/payments.js, line 75

    `PAY_TO ("${PAY_TO}") is not a valid Algorand address. Fix .env before starting the server.`

    .dockerignore, line 2

    .git

    .dockerignore, line 3

    .env

    .dockerignore, line 4

    .env.local

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit 69325929c419. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 69325929c419bbc907d85833d08792f4432e9cfb

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

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